diff --git a/config/initializers/100-logster.rb b/config/initializers/100-logster.rb
index 8e5e21e991..c39494f6a0 100644
--- a/config/initializers/100-logster.rb
+++ b/config/initializers/100-logster.rb
@@ -85,3 +85,7 @@ RailsMultisite::ConnectionManagement.each_connection do
     end
   end
 end
+
+if Rails.configuration.multisite
+  Rails.logger.instance_variable_get(:@chained).first.formatter = RailsMultisite::Formatter.new
+end